Frederick siemens



(No Model.)

- P. SIEMENS.

RBGBNERATIVE GAS BURNER.

No. 399,290. Patented Mar. 12, 1889.

N. PETERS. Pham-Limographm. wmlngwn. uc.

NTTE STATES PATENT FlllCEw FREDERICK SIEMENS, OF DRESDE, SAXONY,GERMANY.

REGENERATIVE GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 399,290, dated March12, 1889.

Application tiled October 30, 1886. Serial No. 217,585x (No model.)Patented in France October 22, 1886, No. 179,187; in England October 26,1886, No. 13,701; in Belgium October 26, 1886,170. 74,991; in ItalyNovember 28, 1886, XL1, 81; in Spain January 10, 1887, No. 6,391, and inAustria-Hungary April 4, 1887, No. 42,048 and No. 9,415.

To (all whom it may concern:

Be it known that I, FREDERICK SIEMENS, a citizenV ol Saxony, residing atDresden, in the Empire of Germany, have invented anew and usefulImprovement in Gas Lamps and lianterns, (for which Letters Patent havebeen obtained in France, No. 170,187, of October 22, 188e', GreatBritain, No. 18,701, of October 2li, 18815; Belgium, No. 74,991, ot'October 2G, 1886; Italy, Vol. XLI, 8l, of November 23, 1886; Spain, No.(5,2301, of January i0, 1887, and Austria-llungary, No. @JMS/9,415, ofApril4, 1887,) of which the li'ollowing is a speciication.

My invention relates to the construction of a lamp or lantern with agas-burner and ducts for air and for products of combustion so ar rangedthat heat is in'iparted from those products to the air and gas supplied,thereby causing great brilliancy of flame.

l will describe this construction, referring to the accompanying drawinFigure l. is a vertical section, and lfig. 2 is a sectional plan, online X X of Fig. i, of a lantern according to my invention.

V he body of the lantern divided into an. upper compartment, L', and alower con'ipartment, L, by a horizontal partition, l), which should beot' ceramic material or enameled metal, so as to act as a reflector'.The lower conlpartment, L, is closed in on all sides by glass. ln theupper compartment, U, to which air is admitted through shieldedper'torations A, there is fixed a metal cylinder, )1, open at the bottomand having formed in .its upper part an annular chamber, G, to which gasis admitted by the service-lupo S. From this chai'nber a number of smalltubes, r, arran ged in a circle, project downward. between a m etalring, in, and a central trumpet-mouth chimney, c, made ot' refractorymaterial, such as porcelain. This chimney ctnnmunicates with a metalchimney, (l, above, .from which the products of combustion escapethrough shielded perforations at the top of the lantern. The gas, itselfwarmed, issuing in numerous jets :from the tubes 'r-and supplied withair heated by its passage along the heated surfaces of M and m, forms abulbous Haine, (indicated in outline by the dotted arrows f,) firstdescending outside the trumpet-mouth of the chimney c and then ascendingwithin it. The hot products of combustion ascending the chimney c C heatthe metal cylinder )I and the radiation of the flame heats n1., and thusthe gas in passing through G and the tubes r and the air in passingalong the heated surfaces of M and n1 become heated, so that veryperfect combustion is effected and great brilliancy of light isproduced. As the iiame depends for its form on the direction in whichthe air and products of combustion tlow, as indicated by the arrows, theopening of the lower compartment, L, by the breaking of its glass orother wise, while it will not necessarily cause eX- tinetion of theilame, will entirely alter its character, rendering itcomparativelyuseless for illumination.

Altlmugh I have shown my .invention as applied to a lantern having itslower compartment incloscd by tlat sides glazed, obviously the samearrangement of burner and air and gas ducts may be used in a lamp havingits lower compartment inelosed by a basilbglass, as indicated by thedotted line l. Such a lamp may be lixed inthe ceiling of a carriage, ormay be suspended from the ceiling of an apartment, in which latter casethe upper part of the lamp need not be provided with ar.

rangements such as are shown for shielding the outlets against theelt'ects ot external currents.

Having thus described the nature of my inyention and the best way lvknow of carrying it out in practice, I claim- In a gas-lamp, thecombination of a hori- Zontal partition constructed ot' material havinga refleeting-surface, a lower compartment closed on all sides by glass,an upper compartment to which air is admitted through shieldedperforations, ameta-l cylinder open at its bottom and having formed uponits top an annular gas-chamber, a metal ring prv-ejecting upward fromthe partition-plate, a ccntrai trun'ipet-inouthed fine inztde ofrefractory Seribing Witnesses, this 14th day of October, material, Lseries of small tubes projecting A. D. 1886. downward i' rom thegas-chamber between the said ring and VtheV Said Hue, and L chimneyFREDERCK SHLBIEN 5 from which the products of combustion escape\Vitnesses:

through shielded perforzL-tions ait the top of J. G. GORDON, the uppercompartment, as and for the pur- J NO. P. M. MILLARD, poSes described.Clerk lo llfessrs. Abel c@ Immy, Consulting In testimony whereof Ihnvesignediny naine Engineers and Patent Agents, 2S Smalle ro to thisspecification, in the presence of two Submnplon Bmlcllngs, London, W. O.

